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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU374Linear
N4041
4078
2
Mannheim AdjustableKeuffel & EsserUSA
769003
Engine divided celluloid laminated mahogany
"10"
1941
C4

Notes: "Indicator changed to improved glass indicator marked PATENT 2,086,502. L scale renumbered 0 - 1 subdivided in tenths."

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